Shell-machine.



L. C. PALMER & H. CARLE.

' SHELL MACHINE.

APPLICATION FILED JULY 9,1914.

Patented Apr. 18, 1916;

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LO CO L. C. PALMER & H. CARLE. SHELL MACHINE. APPLICATION FltED JULY 9.1914.

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ATTORNEY Patented Apr. 18, 1916.

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L. C. PALMER & H. CARLE.

SHELL MACHINE.

APPLICATION FILED JULY 9.1914.

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L. C. PALMER & H..-CARLE.

SHELL MACHINE.

APPLICATION HLED JULY 9, I914.

Patented Apr. 18, 1916.

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L. C. PALMER & H. CARLE.

SHELL MACHINE.

APPLICATION nuzn JULY 9.1914.

Patented Apr. 18, 1916.

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SHELL MACHINE.

APPLICATION FILED JULY 9,1914.

Patent-ed Apr. 18, 1916.

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L. C. PALMER & H. CABLE.

SHELL MACHINE.

APPLICATION FILED JULY 9.1914.

Patented Apr. 18, 1916.

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SHELL MACHINE.

APPLICATION FILED JULY 9.1914.

Patented Apr. 18, 1916.

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L. c. PAII/IIII & H. CABLE- SHELL MACH NE.

APPLICATION FILED IULY 9, I914. 1 179359. Patented Apr. 18, 1916.

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L. C. PALMER & H. CARLE.

SHELL MACHINE.

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SHELL MACHINE.

APPLICATION FILED lULY 9, 1914 Patented Apr. 18, 1916.

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INVENTORS E on a PM M a (M I 6 ATTORNEY L. C. PALMER & H. CABLE.

SHELL MACHINE.

APPLICATION FILED JULY 9. I914.

Patented Apr. 18, 1916.

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A ITOH/VEV UNITED STATES PATENT oF IoE.

LYNDON c. PALMER AND HAROLD CABLE OF BUFFALO, NEW YORK, ASSIGNORS TO F. N. BURT COMPANY. LIMITED, OF BUFFALO, NEW YORK, A CORPORATION 0F CANADA.

SHELL-MACHIN E.

Patented Apr. 18, 1916.

Application filed July 9, 1914. Serial No. 849,869.

To all whom it may concern.

Be it known that we, LYNDON C. PALMER, a citizen of the United States, and HAROLD CABLE, a citizen of Canada and subject of the King of England, 'both residing at Bufi'alo, in the county. of Erie andState of New York, have invented certain new and useful Improvements in Shell-Machines, of which the following is a full, clear, and eX- act description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to box machines, and with respect to its more specific features, to means adapted to make paper shells or tubes which serve as casings for box elements, such as containers or trays, and involving mechanism to assemble the shells with the trays.

One of the objects of the invention is the provision of an eflicient machine for making fliplls from material such as paper, or the Another object of the invention is the provision of a practical machine for adhesively assembling a body-blank with a coverblank in accurate predetermined relation to each other. v

Another object of the invention is the provision of a machine of the character described involving simple and practical devices for folding portions of the coverblank around the edges of the body-blank and adhesively securing the' interfolded parts.

Still another object of the invention is the provision of a practical and eiiicient machine for folding the adhesively assembled blanks into-a tube or shell.

Still another object of the invention is the provision of simple mechanism for automatically assembling shells with trays or drawers.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations lowingtclaims.

In the accompanying drawings forming a part of this specification showingone embodiment of the invent1on and wherein similar reference characters refer to similar parts throughout the several views, Figure l is a plan view of the machine; Fig. 2 is 'a rear elevation thereof; Fig. 3 is a vertical section of a portion of the machine taken on the line a:a', Fig. 1; Fig. 4 is a vertical elevation of a portion of the machine taken on the line gf-y, Fig. 1; Fig. 5 is a vertical elevation of a detail of the machine taken on the line 2-2, Fig. 1; Fig. 6 is a detail view of the device for pressing and smoothing the cover-blanks on the body-blanks; Fig. 7 is a plan view of the blank-carrier, partly in section; Fig. 8 is an elevation of the blank-carrier, partly broken away, showing also certain valve controlling devices associated therewith; Fig. 9 is a perspective view illustratingthe shell stripper or pusher, the device for delivering or.

ejecting the assembled shells and trays to a receiver and operating mechanism therefor; Figs. 10 to 14 inclusive, illustrate the serial operations of certain positioning and folding devices employed in the machine; Fig. 15 is a plan view of the machine on a reduced scale and with most of the mechanism omitted, being primarily intended to illustrate the relative association of the tray hopper andthe hand operated clutch nism associated therewith; Fig. 18 is a detail. sectional view of the mechanism for gripping and transferring the blanks to the formers; Fig 19 is a 'iew of the blank transferring mechanism of Fig. 18 and its associated operative parts looking from the left in Fig. 1, and partly in section; Fig. 20 is a plan view of the delivering mechanism illustrated in Fig. 9; Fig. 21 is a perspective view of the body-web feeding and cutting mechanism, and certain associated parts; Fig. 22 is a section showing the body-web feeding mechanism and asso ciated guides for the web; Fig. 23 is a perspective view illustrating the tray con- "eyer and guides for supplying trays into position to be assembled with the shells;

composite blank comprising the superposed Y body-blank and cover-blank; and Fig. 28 is a view of the completed shell, showing also the tray in position therein.

Referring now more specifically to the drawings, the numeral 1 indicates a table or supporting frame provided with suitable 7 legs '2, betweenwhich latter is supported below the table, a shelf 3, supporting an electric motor 4, a rotary air pump 5 and an air chamber 6, a suitable belt 7, being disposed to drive the pump from the, motor. Pipes 8 and 9 communicate with the air chamber 6 and hand operated valves 10 and 11 serve to control-passage through said pipes. A pipe 12 leads from the discharge side of the pump 5 preferably into the open air.- By

the foregoing construction the operation of. the pump 5 will serve to draw air from the .chamber 6, expel it from the pipe 12, and

when the valves 10 and 11 are open, air will be also drawn from the pipes 8 and 9 into the chamber 6 and expelled by the pump, thereby creating a reduction of pressure or partial vacuum in the pipes 8 and 9, and a similar reduction of pressure in openings leading to said pipes 8 and 9. The numeral 13 indicates a main drive shaft suitably supported above the table in bracket bearings, this shaft'being driven from the motor 4 through the belt 14 and a drive pulley, the

latter loosely mounted on the shaft 13 and adapted to be coupled thereto by means of a friction clutch 15 which may be operated ,sfrom the lever 16 so as to throw the shaft 13 into and out ofoperation. The lever 16 is pivotally connected to a shift rod 17 having a suitable, fork adapted to operatethe clutch 15.

' a small gear 18 which meshes with. a larger pinion 19 mounted on a counter-shaft 20 supported in bearings on brackets. 21 up- "standing from the table 1, and these brackets also support a horizontal rotatable blank carrier shaft 22, on the outer end of which is a mutilated gear comprising four sets of teeth 23 with concave faces 24 intervening between the sets ofteeth and with elongated starting'teeth 25 opposite the concave peripheral portions 24, this mutilated gear cooperating with a mutilated gear 26 rotatable with said counter-shaft, and having a concentric smooth peripheral portion 27 adapted to "cotiperate at proper times with the con- Fixed to the main drive shaft iscavities of the mutilated gear on the shaft 22. The size, proportion and relative number of teeth of the gears 23 and 26 are such that for every revolution of the mutilated gear 26 the carrier shaft 22 is rotated and held at rest between successive movements of 90 by the interlocking -of the smooth peripheral portions of saidrespective gears. The mutilated gear 26 is provided with starting projections 28 with which the starting teeth 25 cooperate. By this construction it will be clear that the continuous rotation of the main drive shaft 13 will cause the intermittent rotation of the blank carriershaft 22, each successive movement of said latter shaft being through an angle of 90, and it will also be clear that between such successive movements the carrier shaft will be locked in position by the engagement of the smooth peripheral portions of the two mutilated gears. Viewed in some aspects it will be clear that any suitable form of mechanism might be employed to cause the intermittent movement ofthe carrier shaft without departing from the spirit of this invention, andhence applican't is not to be limited to the form thus specifically described. On the blank carrier shaft 22 is fixed a pinion 29 which meshes with an idler pinion 30 on astud shaft 31, the latter in turn meshing also with a pinion 32 of the same size as the pinion 29 and keyed to a former shaft, or mandrel shaft, 33, which latter is mounted in bearings supported'by the'bracket 21. By this construction it will be perceived that the former shaft 33 is rotated intermittently and syn-.

chronously with the blank carrier shaft 22. A main cam shaft 34 is journaled in bracket bearings 35 on the upper surface of the table 1 and another or auxiliary cam shaft 36 is journaled in bracketsbeneath the table 1, at the other end of said table. Each of the shafts 34 and 36 is driven from the counter-shaft 20, the former by sprocket.

wheels 37, 38 and chain 39 and the latter,

by sprocket wheels 40 and and sprocket chain 42. 1

On the right hand side of the table looking at Fig. 1, are fastened supporting brackets 43 which support a\ reservoir or tank 44 adapted to receive suitable adhesive such'as glue. Journaled in the walls of the tank 44 is a glue supply roller 45 which is disposed to dip into the glue in the tank, and is rotated from the auxiliary cam shaft 36 by sprocket and chain connections 46, 47 and intermeshing gears48 and 49.

The numeral 50 indicates a .roller which is adapted to gage the thickness of thecoat of glue-on the roller 45 before said glue is applied to a glue transferring roller hereinafter referred to, said gage roller 50 being carried by a shaft 51 having a pinion 52 driven from the gear 49. "The-roller 50 is adjustable toward and from the glue supplying roller 45, as illustrated. An adhesive carrier such as a roller 52 is adapted to be moved into and out of contact. with the glue supply roller 45 so as to be coated with glue from the supply roller and transfer the same to certain blanks and daubers hereinafter referred to, thereby coating said blanks and the dauber with adhesive. Said roller 52 is journaled in arms 53 upstanding from a rock shaft 54 journaled in bearings on the bracket 43 and said rock shaft has an arm 55 to which is pivoted an adjustable connecting rod 56 terminating in a follower comprising a cam roller 57 adapted to coiiperate with a peripheral cam 58 rotating with the auxiliary cam shaft 36. Upon rotation of the cam 58 the transfer roller 52 is positively moved bythe cam in a direction away from the carrier shaft and into contact with the glue supply roller 45, be-

ing held in contact with the latter so as to receive a supply of glue on its periphery.

The cam 58 is so shaped that at the proper time a spring 59 attached to an arm 60 of the rock shaft 54 ispermitted to move the transfer roller 52 away from the roller 45 and into simultaneous contact with a blank and a dauber, as will hereinafter appear.

Upstanding from the bracket 21 is a bracket 61 having guides or eyes 62 in which slideupright rods 63 and 64, the upper ends of said rods carrying a plate 65 on which is supported a magazine containing the supply or-pack of cover-blanks or labels, 66, which are to be adhesively assembled with the body-blanks. The cover-blanks 66 are directly supported by aseries of resilient fingers 67 carried by brackets 68, said brackets being adjustably secured to a cross plate 69 resting on the plate 65 and adjustable longitudinally of the machine by a rod 70 having threaded engagement with an ear 71 on the plate 69. Each of the fingers 67 is supported adjustably on the plate 69 and extends through a central opening in the plate 69, and adjustable screw-threaded pins 72 engage bracket pieces 73 carried by the.

plate 69, the rotation of the pins '72 tending to move the lower portions of the fingers 67 inwardly or outwardly, so as to form a fine adjustment for the distance between oppositely disposed fingers. Each of the fingers 67 has an inwardly extended flange or point 74 for engagingthe lower portion of the pack of labels near its edge. By the above described construction the label magazine may be adjusted either longitudinally or transversely of the machine so that the same may be set in accurate predetermined position. The details of construction of the magazine containing the cover-blanks, or labels, and its adjustments need not be further described herein, as this part of the present device is similar to the label magazine disclosed in'the applicationof Robinson Burt, filed July 10, 1913, Serial No.

' 778,255. It will be understood that, viewed in some aspects, any other suitable coverblank supply device may be employed in place of the one herein described.

As will hereinafter appear, certain bodyblank carriers come successively to rest beneath the cover-blank magazine, whereupon the latter is moved so that the lowermost cover-blank is superposed on and pressed against a body-blank on the carrier, the outer surface of the body-blank having been coated with adhesive. Thereupon this magazine is moved away from the body-blank on the carrier and the lowermost cover-blank of the pile adheres to the blank on the carrier and is stripped from the bottom of the pile. The movement of the magazine toward and from the blank carrier referred to, is accomplished through the instrumentality of a cam 75 on the auxiliary shaft 36, which cam cotiperates with a roller 7 6 mounted on a follower 77, pivotally connected to an arm 78 by a rock shaft 79, anotlier arm 80 of which latter is connected by a link 81 to a downward extension of the rod 64.

The numeral 82 represents a stop in the nature of a plate or rod pivoted to the bracket 61,- which stop may be thrown into and out of position beneath the plate 65 and serve to maintain said plate and the label mechanism in upward position when desired.

A device is employed to press the adhering body-blanks and cover-blanks together and to spread or smooth the cover-blanks on the body-blanks, said mechanism preferably comprising a roller 83 rotatably mounted in two parallel arms 84 pivotally connected at 85 to the plate 65. On the shaft of the roller 83 is mounted a small belt pulley 86 engaged by a belt 87, which latter also engages a belt wheel 88 on the counter-shaft 20. A spring 89 is connected to one of the arms 84 and to the frame and tends to draw the roller 83 toward the path of the body-blanks on the carrier, their movementtoward the path being limited by an adjustable stop 90 adapted to abut one of the arms 84 and supported in a bracket on the frame. The belt wheel 88 is provided with a cam 01- pin 91, which. as the pulley 88 rotates, engages the lower edge of one of the arms 84 and tends to move the arm around its pivot so as to carry the roller 83 in a direction away from the path smoothing roller 83 are so proportioned as to rotate the roller 83 with a peripheral speed the same as that of the blanks on the carrier so that the labels will be pressed and smoothed but not displaced on said carrier.

Although it is within the contemplation of this invention to supply the body-blanks to which rollers may the machine, one by one, as fromamagazine of such blanks, it is preferred to supply such blanks by severing the same from a continuous body-web as themachine operates. A suitable supply of body-Web maybe mounted in roll form, as shown at 92, on a bracket 93 extending from the frame. The blanks cut from thisjweb are preferably of relatively heavy stock such as pasteboard, strawboard, cardboard, etc., and as this materia'lforms the body portion of the article or shells the blanks cut therefrom are herein termed body-blanks. The width of the body-Web is preferably substantially equal to the length of the transverse periphery of the shells o-r tubes to be formed therefrom, so that blanks severed from the body-web in a transverse direction may be folded in a direction corresponding to the width of the Web and the opposite ends of such blanks abutted. The body-Web is longitudinally scored along lines which in the completed article will correspond to the corners of the shells or tubes, the scoring being on the inner faces of such shells and preferably comprising grooves which are formed by removing the material of the web, as by means of scoring rollers Which abrade the surface of the web and thus form said grooves. In the present instance three grooves 9-1, 95 and 96 are provided dividing the web into four longitudinal divisions corresponding in transverse dimension with the respective sides of the preferably rectangular shell to be formed. In the present instance the shell formed has a. greater width than height and hence two of the divisions are smaller than the other two, all as clearly illustrated in Fig. 21.

From the supply roll 92 the body-web passes beneath a guide roller 97, thence upwardly beneath a tension plate 98, thence over a flanged guide roller 99, and beneath a coiiperative keeper roller 100 supported on the upper surface of the table. The web then passes between two feed rollers '101 and 102, one above and the other below the web, have roughened or knurled surfaces and are adapted to grip and feed the web intermittently as they are' rotated. The lower roller 102 is carried by a shaft 103 having a pinion 104 meshing with a gear 105 supported in a bracket bearing 106, the gear 105 being intermittently rotated in one direction by means of va ratchet wheel 107 and a pawl 108 pivotally connected to a rock arm 109, in turn pivoted on the stud shaft supporting the roller 105, the arm 109 being rocked by a link 110 passing through a slot 111 in the table' 1, and pivotally connected to a block 112 adjust'ably mounted in a radial slot 113 in a crank disk 114 fast to a short horizontal shaft 115 supported in a bracket beneath the table 1, said crank disk 114 being driven from the auxiliary cam shaft 46 by a segment gear 116 on said cam shaft meshing with a segment pinion 117 on thehorizontal shaft 115, said gear and pinion being provided with proper starting teeth. The proportions and the relative number of teeth of the gear 116 and the pinion 117 are such as to cause thepawl 108 to rotate the feed roller 102 an amount suflicient to feed or advance the body-Web the proper predetermined distance equal, in the present instance, to the length of the shell to be formed; The upper feed roller 101 is carried by a shaft 118 having a pinion 119 meshing with a pinion 120 of equal size, on the shaft carrying pinion 104. In this manner the upper roller 101 will be rotated at the same speed as the lower roller 102. The shaft 118 loosely bears in the bracket 106 so as to permit the roller 101 to have some movement toward and from the roller102, and the roller 101 is pressed toward the roller 102 by a spring 121 surrounding a pin 122 upstanding from a block 123 in which the shaft 118 bears. The gear 116 and the pinion 117 are locked in positions of rest by the usual intervening smooth peripheral portions of said respective gears.

To positively limit the advance or feed of the body-web and thereby accurately position the advance edge of the body-blank to be severed from said web, stops are disposed in the path of said web. The numeral 124 indicates a vertically reciprocatory body-blank supporting carriage which also serves as one element of the web severing or cutting mechanism, the rear edge 125 of said carrier being squared off to form a cutting edge, or knife, transversely of the web. At the end of the reciprocatory carriage 124 are disposed web stops and web holding devices comprising vertically reciprocatory plates 126 in the path of the web having flanges 127, said flanges providing gripper jaws adapted to coiiperate with the upper surface of the carriage 124 to hold'the web during the cutting operation and toretain the body-blank on the carriage during certain subsequent operations. These jaws are simultaneously raised or lifted from the upper surface of the carriage 124 by rock levers 128 and 129 fulcrumed on an outer face of the carriage 124, one of the arms of each of said rock levers being rounded as at 130 and disposed to have a sliding or cam engagement with the lower ends of the plates 126. The operating mechanism of the levers 128 and .129 comprises a link 131 whereby the motion of one lever is duplicated by the other, and the lever 129 has an arm 132 joined by a connecting rod 133 to a rock lever 134 pivoted on theiframe and carrying a cam roller 135 cotiperating with a cam 136 on the auxiliary cam shaft 36. The plates 126 are positively raised by the cam operating mechanism and are lowered by gravity assisted by the spring 137 coiled around a pin 138, the opposite end of said spring engaging'pins 139 on plates 126.

Upstanding from the table 1 is a frame piece or block 140 which is horizontally slotted as at 141 to permit the passage of' the bod v-web, and the dimension of this,

slot widthwise of the web may correspond exactly to the width of the web and hence serve'as a guide for said web. On a shoulder 142 of the piece 140 is disposed a relatively stationary cutting blade or knife 143, I

having slots 144 through which pass cap screws 145. Adjusting pins 146 extend through an upwardly extending flange 147 of the piece 140 and are adapted to abut the side wall of the knife 143. By this construction the knife 143 may be nicely adjusted into position at right angles to the side edges of the web and relatively with the cutting edge 125 comprised in the movable piece 140. The body-blank carriage 124 is supported at the upper end of a substantially depending stem or tubular rod 148 extending through a guide opening in the table 1 and vertical];' moved through the instrumentality of a bell crank lever 149, one arm of which has a pin and slot engagement with the stem 148 and the other arm of which is pivotally connected to an adjustable rod 150 having a follower comprising a cam roller 151 coiiperating with a peripheral cam 152 on the auxiliary cam shaft 36. A spring .153 connects the stem 148 and the frame and assists in lowering said frame. a

A device is provided for supporting the body-blanks severed from the body-web and carrying said body-blanks into position relative to the adhesive transfer roller 52' for the purpose of applying glue to said blanks and then carrying the glued blanks into position relative to the cover-blank magazine for the purpose of having cover-blanks from the magazine affixed to the glued face of the respective body-blanks and then carrying g the assembled body-blanks and cover-blanks into position relative to certain devices which operate to fold portions of the coverblanks on the body-blanks and remove the assembled blanks, which maybe termed a composite blank, from the carrier. This device comprises a hub 154 mounted to rotate with the shaft 22, said hub having in the present embodiment four radially extending arms 155 terminating in axially extending blank supporting flat carrier faces 156 overhangin thehub, each of said faces 156 comprising a pneumatic gripper, as by means of openings or slots 157 therein, communicating with air passageways 158 in the respective radial arms 155, which latter passageways in turn communicate with respective air passageways 159 in the hub 154, the passageways 159 terminating in the front face of said hub, as illustrated at 160 in Fig. 8, and being adapted to communicate with the face of an oscillatory plate, or

valve, 161 journaled on the shaft 22 and having an air opening 162 communicating by means of a flexible pipe 163 with the air pipe9 leading to the chamber 6. The opening 162 is also adapted to communicate with a concentric segmental channel 164 in the face of the plate 161, this channel being adapted to register at times with the opening 160. The plate 161 is oscillated from the reciprocatory carrier 124 by means of-a 3 link 165 pivoted to said reciprocatory car- 'rier and having a loose connection with the plate 161, as by means of a pin 166 on the plate 161, and a slot 167 in the link 165.

The face of each blank carrier is the same 5 in shape as the body-blank, in the present instance rectangular, and on three sides of each face is provided a gluing device, or dauber, consisting of an open three-sided rectangular frame 168 preferably having brass faces, the faces of which frame, when the body-blank is on the carrier and while glue is being applied to said blank, is in a plane flush with the outer face of the body blank. These daubers have each a reciprocatory or oscillating movement radially so as to alternately dispose the outer faces thereof in planes flush with the outer faces of the body-blanks and also radially spaced inwardly therefrom'toward the axis of the carrier. To accomplish these movements these frames 168 are respectively mounted upon plates 169 guided for radial movement in the arms 155, each plate 169 having a follower, as an anti-friction roller 170; A segmental guiding trackway or caml71 is fixed to the frame of the machine and as the arms 155 rotate, thereby translating the carriers 156 in an endless path, the rollers 170 contact with the inner face of the track 171, the rollers first contacting with said track at the end indicated by the numeral 172 and at that time being moved inwardlyby a cam portion 173 of the track. This inner movement is sufiicient to space the frame 168 away from the plane of the assembled blanks so as to permit certain coverblank folding members or jaws to enter between the rear face of said blank and the outer face of said framevl68. Immediately succeeding the cam portion 173 is a concentric portion 174- which retains the frame 168 in its inner position when the carrier plates are opposite the reciprocatory carriage 124, and the concentricity is, preserved until just before the carrier arrives in position where .glue istransferred from the reservoir to the body-blank on the carrier, whereupon the rollers 170 move radially outward on an inclined face 175, this two superposed supports,

latter movement being suflicient to dispose the outer face of the dauber 168 flush with the outer face of the body-blank which was placed on the carrier plate when opposite the reciprocatory carriage 121. As an efficient means for maintaining the frames 168 in outer flush position and permit them to move inwardly under the influence of the cam 171', each frame 168 comprises a yoke 176 which loosely engages a pin 177 tapped into the web of the arms 155, an expansible spring 178 surrounding this pin and acting to press the yokes, and in consequence the frames 168, radially outward. The outermost position of the frame 168 may be nicely determined bymeans of an adjusting screw 17 9 threaded into the yoke 176 and adapted to abut the web of the arm 155. It will be understood that the construction of each carrier arm 155 and the carrier plates, frames, etc., are similar, so that a description of one will sufiice for all. It may be noted at this point that the body-blanks are of such a size as to provide practicallythe exact dimensions of the shell when folded into a shell, but .that the cover-blanks are to be folded over the opposite sides of the body-blank so that the shell shall present a nice appearance at its ends. Furthermore, the opposite sides and one end of the cover-blank extend beyond the opposite sides and an end of the body-blank when adhesively assembled therewith on the carrier, and said end is adapted to be folded across the joint formed by folding the body-blank and abutting its opposite ends, and serves to secure the opposite ends of the blanks together in shell form. The front and rear sides of the dauber 168 are disposed opposite those portions of the cover-blank which extend beyond the bodyblalnk when assembled therewith on the carrier, and the end 180 of the dauber 168 is disposedopposite the extending end of the cover-blank when in assembled relationship with the blank on the carrier. From this it Will-be clear that the dauber 168 has its parts disposed in such position that when the cover-blanks are applied to the bodyblank on the faces 156, two sides and an end of said cover-blanks will contact the dauber 168 and in this manner the cover-blanks will have glue applied thereto on two sides and an end adjacent said sides of the bodyblank.

On the table 1, at the left hand ide, looking at Fig. 3, is an upstanding lacket 181, providing an elongated guide, or horizontal channel bearing 182, in which are mounted or slides, 183 and 184, these being retained in the guide by a plate 185, the slides 183 and 184 being adapted to move toward and from a station of rest of the intermittently rotating carriers 156. At one end the lower slide 184: carries a blank supporting and pressing head .186, which is adapted to be placed in contact with the outer face of the composite blank on the carrier with the opposite sides of the head 186 practically in transverse alinement with the opposite sides of the bodyblank.' The upper slide 183 has a transverse piece 187 through an opening in which the lower slide passes, and it also has a lateral extension 188 on which a rock-lever 189 is pivoted. The opposite ends of the lever 189 are respectively connected by links 190 to the ends of two levers pivoted on the piece 187, said levers having angularly disposed folding fingers 191. The slides 183 and 184, and the head 186, and the fingers 191 are translatable towardand from the carrier. and the fingers 191 are relatively movable toward and from each other. Furthermore the fingers 191 are translatable relative to the head 186 in a direction normal to said head and transversely of the translatory movement of said head. Advantage is taken of these possible movements to cause the fingers 191 to fold the extending sides of the cover-blank across the edges of the bodyblank and against the opposite face of the body-blank; to cause the interfolded parts to be pressed, or squeezed, between fingers 191 and head 186, and to cause the assembled composite blank to be removed from the former and disposed in position to be grasped by another device for further operating on the composite blank. The rocklever 189 is operated through a connecting rod 192, a rock-lever 193, fulcrumed on support 194, and a cam 195 on the shaft 31, a roller 196 on the lever 193 coiiperating with said cam, this mechanism in connection. with a spring 197, serving to cause the fingers 191 to approach or recede from each other, and to be retained in approached or separated position at'times. The upper slide 183 is connected by an adjustable link 198 to an upstanding rock arm 199 having a roller 200 coiiperating with a cam 201 on the main cam shaft 31, and the lower slide 181 is connected to the upper end of the rock arm 199 by links 202 and 203 providing a toggle, the knee of the toggle being in turn pivotally connected to a follower 204 comprising a roller 205 adapted to coiiperate with a cam 206 on the main cam shaft 34. The cam 201 operates'to positively translate the rod 183 in a direction away from the intermittently rotating carrier, movement toward said carrier being effected by a spring 207. The cam 206 operates to positively translate the head 186 in a direction toward the carrier, and a spring 208 acts to move thehead 186 in a direction away from the carrier and this movement may be a movement relative to the head 187.

The numeral 209 indicates an upstanding bearing bracket having at its top a channel comprising undercut sides guided a slidable carriage 210 which is adapted to move transversely of the plane of movement of the body-blankcarrier, and preferably at a slight angle to the plane of the blank in grasp of the fingers 191. One end of the carriage provides a gripper jaw 211, and a cooperative gripper jaw 212 is pivoted on the carriage and urged toward the jaw 211 by a spring 213 interposed between the carriage 210 and a detail of the jaw 212. A bell crank lever 214 is pivoted to the carriage, one arm of this lever being disposed to engage the tail of the pivoted gripper jaw 212 and the other arm extending in a position to cooperate with the device to positively turn the bell crank in a direction to cause the pivoted jaw 212 to ap proach the jaw 211. The gripping face of the jaw 211 is preferably disposed at an angle to the plane of movement of the gripper carriage 210, this angle being such that when these jaws close on a blank held by the jaws 191 they do not bend said blank but permit the same to be retained in original plane condition between the jaws 191.

To the carriage 210 is fastened a bracket 216, and rotatably mounted in the bracket is a bushing 217, which latter is prevented from longitudinal movement relative to the carriage by its flanged head 218 and a collar 219 fastened to the bushing. The bushing has a squared longitudinal opening through which passes a squared shaft 220, the end of said shaft being disposed opposite the arm 215 of the bell crank lever 211, and a screwthreaded portion 221 of the shaft 220 engages a counter-part threaded bearing, or sleeve, in a b acket or block 222 fixed to the carriage 210.

The purpose of the transferring gripper involving the jaws 211, 212, is'to remove the label or cover-blank from the fingers 191 and transfer them to a former on which they are subsequently folded into shells or tubes, and said gripper is first moved into gripping position, then the jaws are closed on the blank and then the gripper retreats and carries the blank into a position intersecting the path of rotation of the formers, hereinafter referred to. The gripper carriage is moved back and forth and is operated to perform these functions by mechanism as follows: A vertical bearing sleeve 223 is provided in a bracket 224 fixed to the table 1, and a shaft 225 is rotatably mounted in the sleeve 223, the upper end of said shaft having an arm 226 connected with the gripper carriage 210 by a link 227 pivotally engaging an ear on the bearing bracket.

222. A spring 228 is coiled around the vertical shaft, one end being anchored to the bracket 224: as at-229 and the other end' being fixed-to the vertical shaft by engaging one of a series of openings 230 on said shaft,

in which is a plurality of said openings being provided in order that the tension of the spring may be adjusted. The sprin 228 is disposed to urge the carriage 210 toward the folding jaws 191, and the carriage is urged in the opposite direction by a cam 231 engaging a roller 232 on a follower 233, pivotally connected to a yoke 23%, said yoke being in turn pivotally connected to a lower arm 235 of the vertical shaft 225. An additional spring 236 connecting'the yoke 23l and the bracket 209 serves to assist in the advancing movement of the gripper carriage. Fixed to the bushing 217 is an arm 237 which is pivotally connected to a rod 238, in turn pivotally connected to a rock-lever 239 having a roller 2-10 cooperating with a cam 211 on the main cam shaft 3-L, which cam serves to positively rotate the bushing 217. and in consequence. rock the squared shaft 220. and thereby cause the longitudinal movement of the squared shaft relative to the carriage in a direction to positively move the gripper jaw 212 away from its companion jaw 211. A spring 212 is connected to a pin 213 on the bracket 209 and to the end of rocklever 239 and'keeps the roller 210 in contact with the cam 211, serving to close thegripper jaws 211 and 212 when the cam permits.

At the front of the machine the shaft 33 bears in the upstanding bracket 209 and a series of formers or mandrels is mounted to rotate with said shaft. Fastened to the shaft 33 is a hub or block 250 carrying four inandrels or formers- 251 in the nature of arms radially extending from the hub said arms having unobstructed, or free, outer ends. Through each arm extend two independent radial passageways, or chambers, 252 and 253, these passageways being separated from each other in the arm and opening into the respective adjacent front and rear faces of the arm by means of a series of openings 251. The passageways 252 and extend through the hub 250 and open into the front face of said hub at 255, the front openings being adapted to register at times with a channel 256 in an oscillatory valve. or plate, 257 closely abutting the front face of the hub and adapted to be oscillated through the instriunentality of a connecting rod 258, a rock-lever 259 and a cam 260 on the main cam shaft. said lever 259 having the customary roller for engaging the cam 260. a spring 261 being employed to effect movement of the plate 257 in one direction. The formers 251 are driven synchronously with the intermittently moving blank carriers and said formers are so disposed hat one of them when in vertical position is horizontally opposite the folding fingers 191. The gripper carriage 210 takes the composite blank from thefolding gripper and places the same in the path of the formers directly opposite the perforated advancing face of the uppermost former,

and with one of the divisions of the blank, in the present instance the smaller inner division, opposite said face. The blank having been placed as just stated the advancing face of the former is energized to cause the blank to pneumatically adhere to the advancing faceof the former, whereupon the transfer gripper releases the blank and retreats a slight distance so as to dispose the grippers211 and 212 out of the subsequent rotary path of the blank. The piece or plate 257 has a passageway communicating with the passageway 256 and, by means of a flexible pipe 263, with the air pipe 8 leading to the vacuum pump 5.

The flat composite blank consisting of the body-blank and the adhering coverblank having'been pneumatically gripped to the former or mandrel as explained, is to be folded therearound and its opposite ends secured to form a shell. Extending transversely of the main cam shaft is a short horizontal oscillatory shaft 264, having.

fixed thereto an upstanding arm 265 having a dove-tailed vertically disposed slot in whichis mounted a supportingplate 266 having a pin 267 connected by a spring 268 to a pin 269 on the arm 265, said spring being adapted to yieldingly hold the support 266 from'upward movement relative to said arm' 265. The position of said support 266 relative to the arm 265 may be adjusted by means ofa screw 270 threaded into the support 266 and. abutting the upper end of the arm 265. 'The support 266carries devices which operate to fold the composite blank around the former, these devices comprising two fingers or horns 271 which are disposed to contact the outer opposite portions of the blank as the former moves the blank to and between these horns, and further comprises two rollers 272 between which the former carries the partially folded blank, which rollers further fold the blank against the opposite sides of the former and may also press the folded portion.

, against said sides, as the former moves therebetween. The mandrel or former comes to-rest with its rear or trailing face on a level with or slightly above the lower element of the cylindricalsurface of the rollers 272, whereupon the shaft 264 is oscillated, first in one direction to fold one end of the body-blank onto the trailing face of the mandrel, andvdispose the end edge in close proximity to the opposite end of the edge of the blank, and then in the opposite direction to fold and Wipe the projecting end of the cover or label across the joint in the body-blank and down onto the end porter occurs at this part.

tion of the body-blank or directly onto the end of the attached cover-blank, if the lat- The oscillatory movement of the rollers 272 is effected through the oscillation of the arm 265 and the shaft 264, which latter has an arm 273 connected by a rod 274 to a lever 275 pivoted on a bracket 276, and having a roller 277 coiiperating with a cam 278 on the main cam shaft 3-1. The cam positively effects movement of the roller 272 in one direction, movement in the opposite direction being effected by a spring 279. Preferably the lower element of the rollers 272 is slightly below the trailing face of the mandrel opposite thereto, so that when the rollers are oscillated to fold the end of the body-blank and the extended end of the COYEI' or label they exert some pressure upon the folded portions, the spring 268 permitting a slight rise of these rollers and causing said pressure. In order that the blanks shall be held in folded condition closely adjacent the former just before and during the folding operations of the rollers 272, relatively stiff upright keepers, or spring plates, 280 are provided, one on each side of the former, said plates having' outwardly flaring upper end portions to ease .theformer and the folded blank therebetween.

After being folded, as just described, the former moves to another, its lowermost position, where the shell formed may be inspected if desired, and then it moves to a next succeeding horizontal position, the same being a convenient position for stripping the shell from the mandrel and assem bling the shell with a tray, as hereinafter described. a

The numeral 281 indicates a bracket, the upper portion of which provides a horizontal dove-tailed channel 282 below the shaft 33 and at one side of the path of the formers or mandrels. Connected to recipro'cate in the channel 282 is'a plate 283 hav'- ing attached thereto a shell stripper comprising a rod or plate 284 which is adapted and remove, push, or strip the same from the former, the shells passing over the outer or free ends of the formers. The plate283 is connected by a rod 285 to a rock arm 286 pivoted; at 287 and oscillated through the instrumentality of a cam 288 on the main cam shaft 34, and a follower 289 having a roller 290 adapted to coiiperate with the cam 288., The cam-288 operates to positively. move the stripper in a direction to;- slide the shells off the former, movement in the ppposite direction being effected by a spring 291. The numeral 300 indicates a hopper or container for a supply of trays, which in the present instance are prismatic open"'boxes of a size to fit into the shells formed by'thex 

